Queens Park Rangers have been dealt a potential blow regarding the fitness of Sam McCallum ahead of their upcoming Championship fixture.

What's the latest?

According to a report by West London Sport, QPR have been assessing the Norwich City loanee after he limped off with what appeared to be a hamstring injury in the club's Carabao Cup penalty shootout victory over Everton on Tuesday evening.

And, while the report goes on to state that, at present, the extent of the left-back's injury is not known, should the 21-year-old indeed have damaged his hamstring and is subsequently sidelined for a considerable amount of time, his absence would cause Mark Warburton with a major problem, as fellow left-back Lee Wallace is also currently out of action due to injury.

Warburton will be gutted

Considering how impressive McCallum has looked on the left-hand side of the QPR defence in recent weeks, as well as the aforementioned selection headache the defender's absence would cause Warburton, the potential injury of the 21-year-old would undoubtedly leave the 59-year-old manager gutted.

Indeed, over his four Championship appearances for the Rs so far this season, the £3.15m-rated man has scored two goals, as well as taking an average of 1.5 shots and making 0.8 key passes per game.

The loanee has also impressed in metrics more typical of his position, making an average of 1.3 interceptions, 1.8 tackles, 0.5 clearances and winning 5.5 duels per match, with these returns seeing the £5k-per-week defender earn an average SofaScore match rating of 6.92.

As such, McCallum's potential absence, particularly considering Wallace's own injury and the fact the west London side face a trip to one of the promotion favourites in West Bromwich Albion on Friday evening, is sure to come as a major blow for Warburton, who will undoubtedly be hoping his side can take the confidence of a win over Everton into the clash at The Hawthorns.

In other news: "Lively" £3.6m-rated QPR dynamo who made three key passes stole the show vs Everton